Nozzle block



Sqn. 3o, 1924. 1510;-144

H. T. HERR vNozzm: BLOCK Filed sept. 13, 1.922

Hlmzr INVENTOR 'ATTORNEY Patented Sept. 30, 1924:n

UNITED STATES PATENT orifice.

HERBERT T. HERR, OF BHILADELPHTA, PENNSYLVANIA, .ASSIGNOR TO WESTING HOUSE ELECTRIC AND MANUFACTURTNG CGMPANY, A CQRPORATION OF PENN SYLVANIA.. l

NOZZLE BL() GK.

Application filed September 13, 1.922. Serial No. 588,054.

To all w/wm t may concern:

Be it known that l, HERBERT T. Hmm, a citizen of the United States and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Nozzle Blocks, of which the following is a specification.

My invention relatesto nozzle box structures for elastic-fluid turbines and it has lfor its object to provide a nozzle block which shall be made in sections so that the nozzle passages may be constituted by complemental grooves or passages in inclined end faces of the sections, whereby the sections may be produced by forging or die-casting processes, thereby making it possible to manufacture nozzle structures economically, and to build up nozzle blocks of adjustable sizes from sections carried in stock.

Apparatus made'in accordance with my invention is illustrated in the accompanying drawings, forming a part of this applin cation, in which: Fig. 1 is a detail sectional view of a turbine showing my improved noz zle block structure applied thereto, the section being taken in part along the line ll-l of Fig. 2; Fig. 2 is a plan view, from the underside, of my improved nozzle construction; and Fig. 3 is a sectional view along the line lII--III of Fig.- 1.

ln the drawings, I show a nozzle box 10, to which is secured a nozzle block 11 and a sector of stationary blades or buckets 12, carried by a suitable member 13 bolted to the boX. A blade carrying disk lil is .provided with first and second rows of blades or buckets 15 and 16, the blades or buckets 15 being arranged between the nozzle block 11 and the sector of stationary blades or buckets 12 so as to be acted upon by motive fluid received from the nozzle passages 17 of the nozzle block. The second row of moving blades 16 is acted upon by motive fluid discharged by the stationary blades or buckets 12. It is to be understood, however, that the blading referred to is by way of example only; and that, in so far as my invention is concerned, any suitable blading may be employed with my improved nozzle structure.

f My invention consists in an improved type of nozzle block structure so that 1t may be readily produced by relatively eco nomical manufacturing processes, such as forging or diecasting and `so that it may be made of any suitable size. To this end, I make the nozzle block structure 11 in a plurality of sections 18 which have front and back faces 19 and 2O and inclined end faces 21 and 22, the latter faces being respectively provided with grooves or passages 23 and 24, which, when the sections are assembled, constitute the nozzle passages 17, aforesaid. A nozzle structure to meet different requirements may be readily built up by choosing the proper number of sections.

The sections 18 are preferably provided with upper and lower edges or flanges 25 and 26 at the front faces thereof for attachment to the nozzle box 10, the upper flange or edge being preferably held in place by the holding means for the stationary blade or bucket carrier 13.

From the foregoing, it will be apparent that, by making the nozzle block in sections and by providing the nozzle passages in the faces of the sections, 1 have produced a nozzle block which may be more expeditiously and economically manufactured, as by drop-forging or die-casting processes, than may be produced by processes in common practice, such as casting and finishing. Also, as the size of the nozzle structure may be varied merely by the number of sections used, it will be apparent that the cost of turbine manufacture may be materially reduced and more prompt service afforded for the reason that, with a single turbine and a quantity of nozzle sections in stock, a turbine of any given capacity within its limits,

may be produced merely by choosing the number of nozzle sections corresponding to the capacity desired.

While 1 have shown my invention in but one form, it will be obvious to those skilled in the art that it is not, so limited, but is susceptible of various other changes and modifications, without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or as are specifically set forth in the appended claims.

What I claim is 1. rlhe combina-tion with a nozzle box, of a sectional nozzle block structure comprising pairs of abutting members having complemental grooves or passages onl adjoining faces constituting nozzle passages, said adsov joining members being secured directly to the nozzle box.

2. The combination with a nozzle box, of a nozzle block structure comprising pairs of abutting sections .having end faces inclined with `respect ,to the iront and back faces thereof, the adjoining end faces being provided with complemental passages or grooves to constitute nozzle passages, each of said sections being attached directly to the nozzle boX.

'3. The combination With a nozzle box, of a plurality of nozzle block members having flanges for'attaehing directly to the box and being pro-vided with inclined end faces having complemental grooves or passages to constitute nozzle passages.

4. A turbine comprising blading, a nozzle box and a nozzle construction including pairs of abutting members secured directly to the nozzle box and having complementa] passages on adjoining faces of the members constituting nozzle passages, whereby, with the blading, a turbine of a desired capacity may be produced by vusing a suitable number of sections.

In testimony whereof, I have hereunto subscribed my name this 6th day of September 1922.

HERBERT '.l. HERR. 

